Success may be unlikely, but progressive activists say it isn’t hopeless.
The president's announcement marks the start of a contentious Senate battle.
Current federal prosecutor James Herbert said Barr "has brought shame on the department he purports to lead."
The reliably conservative judge is an ideological heir to the late Justice Antonin Scalia.
Donald Trump places 15th in the survey, trailing Bill Gates, Elon Musk, the Dalai Lama and Vladimir Putin.
"What if he loses and refuses to leave?" Olivia Troye said aides have discussed the possibility behind closed doors.
Trump is expected to name Amy Coney Barrett to the nation's highest court.
Republicans notoriously refused to meet with Merrick Garland as part of thwarting his nomination to the Supreme Court in 2016.
The president tells the Newport News, Virginia, crowd that the only legitimate election is the one he wins.
"Every single hour in South Carolina, Lindsey Graham is being violently out-fundraised," mocks the group's spot after the senator's Fox News meltdown.